Notification horn



FIG. 1 is a front perspective view of a notification horn showing our new design;

FIG. 2 is top plan view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a front elevational view thereof;

FIG. 5 is a rear elevational view thereof;

FIG. 6 is a right side view thereof; and,

FIG. 7 is a left side view thereof.

The portion of the drawing shown in dotted line form no part of the claimed invention. 

CLAIM The ornamental design for a notification horn, as shown and described. 